Mitsubishi Electric MSZ-AP25VG-E1 Service Manual page 48

OPERATING PROCEDURE
3. Removing the indoor electrical box
(Photos 3, 4, 5)
(1) Remove the front panel and the horizontal vanes (U)
(L).
(2) Remove the panels (R) (L) (U) (F).
(3) Remove the lead wires of indoor coil thermistor and
the cable of the Wi-Fi interface (MSZ-AP∙VGK) from
the water cover (Photo 3).
(4) Remove the earth wire connected to the indoor heat
exchanger from the electrical box.
(5) Disengage the catches of the water cover, and
remove the water cover.
(6) Remove the screw of the V.A. clamp (Photo 3).
(7) Remove the V.A. clamp and the indoor/ outdoor con-
necting wire.
(8) Remove the screw of the electrical cover, and remove
the electrical cover (Photo 3).
(9) Unhook the catch on the left side of the display and
receiver P.C. board holder. Pull the display and
receiver P.C. board holder as if opening the door at
90 degrees.
(10) Disconnect the following connector (Photo 5):
<Indoor electronic control P.C. board>
CN110 (Wi-Fi interface) (MSZ-AP∙VGK)
(11) Remove the Wi-Fi interface (Refer to section 2).
(MSZ-AP∙VGK)
(12) Disconnect the following connectors (Photo 5):
<Indoor electronic control P.C. board>
CN151 (Vane motors)
CN211 (Indoor fan motor)
CN112 (Indoor coil thermistors)
(13) Remove the electrical box.
4. Removing the indoor terminal P.C. board, the
switch board, the display board, the receiver
board and the indoor electronic control P.C.
board
(1) Remove the indoor electrical box (Refer to section 3).
(2) Remove the screw of the terminal block (Photo 5).
(3) Remove the earth wire connected to the electrical box
from the indoor electronic control P.C. board.
(4) Remove the indoor terminal P.C. board.
(5) Pull the display and receiver P.C. board holder as if
opening the door at 90 degrees. Remove the display
and receiver P.C. board holder from the axial rod on
the electrical box.
(6) Open the rear cover of the display and receiver P.C.
board holder.
(7) Remove the switch/ buzzer P.C. board, the display P.C.
board and the receiver P.C. board.
(8) Remove the indoor electronic control P.C. board.
OBH788C
PHOTOS/FIGURES
Photo 4
Lead wire of indoor
coil thermistor
Photo 5
CN112
Terminal P.C.
board
CN151
Screw of
the terminal block
48
Earth wire connected to
the indoor heat exchanger
Screw of
the earth wire
Display and
receiver P.C.
board holder
Indoor electronic
control P.C. board
CN110
Earth wire connected
to the electrical box
CN211